The mystery of communication.
In the end, lives are destroyed, in one way or another, because two people could not invent a way to make their needs and dreams clear.
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The film suggests that all of us are captives of environment and programming: there is a wide range of experience that remains forever invisible to us, because it falls in a spectrum we simply cannot see.
- Roger Ebert
Great insight into the film... and life. Roeg ingeniously plays on this by making the film such a visual experience.